and all of the time, the technology was catching up with our ambition. so we have many, many ways that we tried to fly or did fly with birds. we've had birds trained to fly alongside micro leitz. that in itself takes a year to achieve to get birds used to flying alongside micro lites. >> a micro lite being? >> an ultra lite you call it here. it's a machine that they are imprinted on -- or imprinted on the person who flies it. they believe the person who flies it is their mother, that means they're bonded to that person and will go wherever that person goes. the micro lite goes with him. and so he can film from the air, so he can get incredible shots that you couldn't get in any other way. what it does is take you into their world. and this is what "wing planet" is all about, going into the bird's world. >> and what do we see inside their world? one of the things you're actually able to see, and you can do this by putting a camera on the birds themselves. >> absolutely, yeah. >> you can see interaction with other animals, dangerous animals, you wouldn't n